Ultrasound and the FAST (Focused Abdominal Scan for Trauma) scan is currently being used in the Emergency Department to help evaluate trauma patients. In the field a paramedic will use the START (Simple Triage Rapid Treatment) triage procedure to evaluate many patients and to help decide which patients are more critical and therefore need to be transported first. This study aims to create a mass casualty environment through the use of 10 volunteers who are on peritoneal dialysis and 10 patients who are not.